OGK Kabuto Hiro Ultra-Lightweight NXT Photochromic Sports Sunglasses

A new multi-sport eyewear model from our eyewear lineup, designed to perform across a wide range of active pursuits -- from cycling and running to trekking and beyond.

The newly added Hiro is the lightest model in the series, achieving a remarkable 17g. Through a streamlined frame design and ultra-thin, lightweight NXT photochromic lenses, it delivers a featherlight wearing experience that remains comfortable even during extended use.

Slim yet securely fitting temples accommodate the diverse movements of running, cycling, and walking. Designed with consideration for the vertical motion of running, vibrations during cycling, and forward-leaning postures, the Hiro delivers a comfortable and stable fit across a wide range of activities. The NXT photochromic lenses provide clear, undistorted vision while keeping weight to a minimum -- suitable for use from bright daylight through to low-light conditions.

Built around the series-lightest weight of 17g, and engineered for comfortable wear and stable vision, the Hiro is a model that performs reliably across everyday training and outdoor activities alike.

💡 Key Technology Highlights: Asian-fit cylindrical wide lenses combined with a 3-position adjustable nose pad and flexible slim temples for a secure, slip-resistant fit across all active pursuits!

Key Features

• Ultra-Lightweight (17g Series Lightest): The lightest model in the lineup at just 17g for zero-burden extended wear.
• ★ NXT Photochromic Lenses: Ultra-high-performance lenses usable from day to night with excellent optical properties, minimal distortion, and superior durability. Developed from bulletproof protection research, surpassing polycarbonate in lightness, impact resistance, and strength.
• ● Asian-Fit Cylindrical Wide Lens: Cylindrical (barrel-shaped) wide lens tailored for Asian facial contours, providing an expansive field of vision and excellent fit.
• ● Anti-Reflective Coating: Applied to the lens surface to suppress reflections, significantly improving visibility particularly with high-transmittance lenses like clear variants.
• ● Wide Range of Visible Light Transmission: Utilizes the widest photochromic transition range in the NXT lineup, with agents blended directly into the lens material during molding for long-lasting performance.
• ● Temples Designed for Diverse Activities: Newly developed slim temples engineered to flex appropriately, conforming to facial contours with soft pads for lightweight comfort and a secure, slip-resistant fit.
• ● Eco-Friendly Rilsan® Frame: Uses Rilsan® Clear G850 Rnew (polyamide), an eco-friendly frame material containing 45% plant-derived content.
• ● Adjustable Nose Pad: Stable nose pad featuring three height adjustment positions for a personalized and secure fit.
• ● Inner Frame Compatible: Supports a dedicated inner frame (nylon rimless style), sold separately.

Technical Specifications